Alert archive / Pennsylvania / Tornado Warnings in 2018

Tornado Warning 8, NWS State College, PA

June 13, 2018Lycoming County, Tioga County, Pennsylvania

NWS State College, PA issued this tornado warning at Jun 13, 2018, 7:57 PM EDT for Lycoming County, Tioga County, Pennsylvania. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 13, 2018, 7:57 PM EDT (23:57 UTC)
Expired
Jun 13, 2018, 8:30 PM EDT
In force
33 min
Issued by
NWS State College, PA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Lycoming County, PA, Tioga County, PA

The radar

The State College radar (KCCX), 90 km from the middle of the area, began a volume at 23:57 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 13, 4:06 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 13, 6:33 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 12.0 hours before the alert went out and 194 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 2018-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 173 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2018-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 146 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
173 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
543 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
146 m²/s²
0-3 km storm-relative helicity
121 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

120 
WFUS51 KCTP 132357
TORCTP
PAC081-117-140030-
/O.NEW.KCTP.TO.W.0008.180613T2357Z-180614T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service State College PA
757 PM EDT WED JUN 13 2018

The National Weather Service in State College PA has issued a

* Tornado Warning for...
  North central Lycoming County in north central Pennsylvania...
  South central Tioga County in north central Pennsylvania...

* Until 830 PM EDT.
    
* At 757 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Cedar Run, moving southeast at 40 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Buttonwood around 820 PM EDT.

Other locations impacted by this tornadic thunderstorm include Ski
Sawmill Ski Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4158 7746 4163 7740 4152 7700 4135 7715
TIME...MOT...LOC 2357Z 299DEG 35KT 4157 7739 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

DeVoir
2 follow-up statements
675 
WWUS51 KCTP 140017
SVSCTP

Severe Weather Statement
National Weather Service State College PA
817 PM EDT WED JUN 13 2018

PAC117-140024-
/O.CAN.KCTP.TO.W.0008.000000T0000Z-180614T0030Z/
Tioga PA-
817 PM EDT WED JUN 13 2018

...THE TORNADO WARNING FOR SOUTH CENTRAL TIOGA COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved into 
Lycoming County. Therefore, the tornado warning has been cancelled.
A Severe Thunderstorm Warning remains in effect until 830 PM EDT, 
and a Severe Thunderstorm Watch remains in effect until 1100 PM EDT 
for north central Pennsylvania.

LAT...LON 4152 7715 4149 7703 4138 7712 4151 7730
      4154 7731 4154 7722
TIME...MOT...LOC 0014Z 301DEG 27KT 4151 7723 

$$

PAC081-140030-
/O.CON.KCTP.TO.W.0008.000000T0000Z-180614T0030Z/
Lycoming PA-
817 PM EDT WED JUN 13 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM EDT FOR NORTH
CENTRAL LYCOMING COUNTY...
    
At 814 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Buttonwood, moving southeast at 30 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Buttonwood around 820 PM EDT.

Other locations impacted by this tornadic thunderstorm include Ski
Sawmill Ski Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4152 7715 4149 7703 4138 7712 4151 7730
      4154 7731 4154 7722
TIME...MOT...LOC 0014Z 301DEG 27KT 4151 7723 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

DeVoir
442 
WWUS51 KCTP 140032
SVSCTP

Severe Weather Statement
National Weather Service State College PA
832 PM EDT WED JUN 13 2018

PAC081-140041-
/O.EXP.KCTP.TO.W.0008.000000T0000Z-180614T0030Z/
Lycoming PA-
832 PM EDT WED JUN 13 2018

...THE TORNADO WARNING FOR NORTH CENTRAL LYCOMING COUNTY HAS
EXPIRED...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.  However
small hail and gusty winds are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
north central Pennsylvania.

LAT...LON 4152 7715 4149 7703 4138 7712 4151 7730
      4154 7731 4154 7722
TIME...MOT...LOC 0031Z 299DEG 35KT 4143 7704 

$$

DeVoir

The office that day

Everything else NWS State College, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 13, 6:27 PM EDTSpecial Weather StatementCTPPotter33 min
Jun 13, 6:54 PM EDTSpecial Weather StatementCTPPotter, Tioga66 min
Jun 13, 7:31 PM EDTSevere Thunderstorm WarningCTPPotter, Tioga59 min

Nearby

Tornado Warnings in Pennsylvania, 2018Every tornado warning in 2018Tornadoes in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.